Skip to main content

Clariant Oil Services Develops Low Density, Oil-soluble Scale Inhibitor for Squeeze Application

Benefits
  • Low density to aid well lifting, post squeeze treatment
  • Oil dispersed to minimize introduction of water into the reservoir
  • Excellent barium sulphate scale inhibition efficiency
  • Environmentally-acceptable and superior performance 

Background

A major North Sea operator required a product that could be deployed for barium sulphate scale control in low temperature, high water producing wells that experienced significant well lifting problems post scale squeezing. Historically, scale control had been achieved through conventional aqueous squeeze treatments. However, due to increasing water production and decreasing pressure, well lifting problems had been observed. The use of hybrid treatments with diesel pre-flush and overflush had failed to overcome this problem. Field information is described below in Table 1.

Table 1: Well Conditions

BHT  85°C 
Reservoir Pressure ~ 250 bar
Scale Predicted Barium sulphate

Clariant Oil Services Solutions and Value Delivered

Following an in-depth development program, Clariant Oil Services supplied a novel, low density squeeze scale inhibitor product, SCALETREAT 8061, which was non-emulsifying, effectively retained in the reservoir and provided a good level of inhibition against barium sulphate scale. SCALETREAT 8061 was successfully deployed and the well readily returned to production post squeeze. A summary of successive squeeze treatments is presented in Table 2 below.

Table 2: Summary of treatments performed

June_21_2013

This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant's products for its particular application.*Nothing included in this information waives any of Clariant’s General Terms and Conditions of Sale, which control unless it agrees otherwise in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing Clariant products, are available upon request and are provided in compliance with applicable law. You should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact Clariant. *For sales to customers located within the United States and Canada the following applies in addition: NO EXPRESS OR IMPLIED WARRANTY IS MADE OF THE MERCHANTABILITY, SUITABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE OF ANY PRODUCT OR SERVICE.

Copyright © Clariant International Ltd, 2013.


Documents

Page summary

Summarization in progress